The Viking Extended Coverage Quick Response Horizontal Sidewall Sprinkler is intended for installation near the wall and ceiling. The special deflector provides a water spray pattern outward in a quarter-spherical pattern. Most of the water is directed away from the nearby wall with a small portion directed at the wall behind the sprinkler. The top of the deflector is oriented parallel with the ceiling or roof. See Technical Data Sheet (15mm) or Technical Data Sheet (20mm) for further information.